static nsCSSValueList AppendValueToList(ref nsCSSValue aContainer,
nsCSSValueList aTail,
nsCSSValue aValue)
{
nsCSSValueList entry;
if (aContainer.GetUnit() == nsCSSUnit.Null) {
Debug.Assert(aTail == null, "should not have an entry");
entry = aContainer.SetListValue();
} else {
Debug.Assert(aTail.mNext == null, "should not have a next entry");
Debug.Assert(aContainer.GetUnit() == nsCSSUnit.List, "not a list");
entry = new nsCSSValueList();
aTail.mNext = entry;
}
entry.mValue = aValue;
return entry;
}
internal ParseAnimationOrTransitionShorthandResult ParseAnimationOrTransitionShorthand(
nsCSSProperty[] aProperties,
nsCSSValue[] aInitialValues,
ref nsCSSValue[] aValues,
size_t aNumProperties)
{
var tempValue = new nsCSSValue();
// first see if 'inherit' or 'initial' is specified. If one is,
// it can be the only thing specified, so don't attempt to parse any
// additional properties
if (ParseVariant(ref tempValue, VARIANT_INHERIT, null)) {
for (uint32_t i = 0; i < aNumProperties; ++i) {
AppendValue(aProperties[i], tempValue);
}
return ParseAnimationOrTransitionShorthandResult.Inherit;
}
const size_t maxNumProperties = 7;
Debug.Assert(aNumProperties <= maxNumProperties,
"can't handle this many properties");
var cur = new nsCSSValueList[maxNumProperties];
var parsedProperty = new bool[maxNumProperties];
for (size_t i = 0; i < aNumProperties; ++i) {
cur[i] = null;
}
bool atEOP = false; // at end of property?
for (;;) { // loop over comma-separated transitions or animations
// whether a particular subproperty was specified for this
// transition or animation
for (size_t i = 0; i < aNumProperties; ++i) {
parsedProperty[i] = false;
}
for (;;) { // loop over values within a transition or animation
bool foundProperty = false;
// check to see if we're at the end of one full transition or
// animation definition (either because we hit a comma or because
// we hit the end of the property definition)
if (ExpectSymbol(',', true))
break;
if (CheckEndProperty()) {
atEOP = true;
break;
}
// else, try to parse the next transition or animation sub-property
for (uint32_t i = 0; !foundProperty && i < aNumProperties; ++i) {
if (!parsedProperty[i]) {
// if we haven't found this property yet, try to parse it
if (ParseSingleValueProperty(ref tempValue, aProperties[i])) {
parsedProperty[i] = true;
cur[i] = AppendValueToList(ref aValues[i], cur[i], tempValue);
foundProperty = true;
break; // out of inner loop; continue looking for next sub-property
}
}
}
if (!foundProperty) {
// We're not at a ',' or at the end of the property, but we couldn't
// parse any of the sub-properties, so the declaration is invalid.
return ParseAnimationOrTransitionShorthandResult.Error;
}
}
// We hit the end of the property or the end of one transition
// or animation definition, add its components to the list.
for (uint32_t i = 0; i < aNumProperties; ++i) {
// If all of the subproperties were not explicitly specified, fill
// in the missing ones with initial values.
if (!parsedProperty[i]) {
cur[i] = AppendValueToList(ref aValues[i], cur[i], aInitialValues[i]);
}
}
if (atEOP)
break;
// else we just hit a ',' so continue parsing the next compound transition
}
return ParseAnimationOrTransitionShorthandResult.Values;
}
public BackgroundParseState(CssValue mColor, CssValueList mImage, CssValuePairList mRepeat, CssValueList mAttachment, CssValueList mClip, CssValueList mOrigin, CssValueList mPosition, CssValuePairList mSize)
{
this.mColor = mColor;
this.mImage = mImage;
this.mRepeat = mRepeat;
this.mAttachment = mAttachment;
this.mClip = mClip;
this.mOrigin = mOrigin;
this.mPosition = mPosition;
this.mSize = mSize;
}
public BackgroundParseState(CssValue mColor, CssValueList mImage, CssValuePairList mRepeat, CssValueList mAttachment, CssValueList mClip, CssValueList mOrigin, CssValueList mPosition, CssValuePairList mSize)
{
this.mColor = mColor;
this.mImage = mImage;
this.mRepeat = mRepeat;
this.mAttachment = mAttachment;
this.mClip = mClip;
this.mOrigin = mOrigin;
this.mPosition = mPosition;
this.mSize = mSize;
}
// Public interface
internal static IEnumerable<CssValue> TraverseList(CssValueList @this)
{
return @this.TraverseList(i => i.mNext).Select(i => i.mValue);
}
// Public interface
internal static IEnumerable <CssValue> TraverseList(CssValueList @this)
{
return(@this.TraverseList(i => i.mNext).Select(i => i.mValue));
}